Slider window assembly with movable panel drive system

ABSTRACT

A vehicular slider window assembly includes a frame portion having an upper rail and a lower rail, a fixed window panel, and a movable window panel that is movable along the rails between an opened position and a closed position. A drive system is operable to move the movable window panel between the opened position and the closed position. The drive system includes a single flexible drive element that, when the drive system is actuated to move the window panel in one direction, the flexible drive element pulls the movable window panel along the rails, and when the drive system is actuated to move the window panel in the opposite direction, the flexible drive element pushes the movable window panel along the rails. The lower rail includes guide structure that limits flexing of the flexible drive element when the flexible drive element pushes the movable window panel along the rails.

CROSS REFERENCE TO RELATED APPLICATION

The present application claims the filing benefits of U.S. provisional application Ser. No. 62/684,948, filed Jun. 14, 2018, which is hereby incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates to a slider window assembly for a vehicle and, more particularly, a rear slider window assembly for a pickup truck or the like.

BACKGROUND OF THE INVENTION

It is known to provide a slider window assembly for an opening of a vehicle, such as a rear slider window assembly for a rear opening of a pickup truck. Conventional slider window assemblies for rear openings of trucks or the like typically include three or more panels, such as two fixed window panels and a slidable window panel. The slidable window panel is supported by rails and may be moved along the rails to open and close the window.

SUMMARY OF THE INVENTION

The present invention provides a rear slider window assembly having a drive system that uses a single flexible drive element to open and close the window. The window assembly and drive system include structure that limits flexing or bending of the drive element when pulling or pushing the movable window.

According to an aspect of the present invention, the rear slider window assembly includes a frame portion having an upper rail and a lower rail, a fixed window panel (defining an opening) that is fixed relative to said frame portion, and a movable window panel that is movable along the upper rail and the lower rail. The movable window panel is movable between a closed position, where the movable window panel is disposed at the opening, and an opened position, where the movable window panel is disposed at least partially along the at least one fixed window panel. A drive system is operable to move the movable window panel between the opened and closed positions. The drive system comprises a single flexible drive element that, when the drive system is actuated to move the window panel in one direction, pulls the movable window panel along the lower rail, and when the drive system is actuated to move the window panel in the opposite direction, the drive element pushes the movable window panel along the lower rail. The lower rail of the frame portion comprises guide structure that limits flexing or bending of the drive element when the drive element pushes the movable window panel along the lower rail.

The flexible drive element may comprise a flexible cable or tape, and the guide structure may comprise one or more channels disposed along or formed along the lower rail or a telescoping support or the like. Thus, rotatably driving the drive motor of the drive system in one direction causes movement of the flexible drive element in one direction to open the window, and rotatably driving the drive motor of the drive system in the opposite direction causes movement of the flexible drive element in the opposite direction to close the window. The flexible drive element may be coiled or spooled when retracted, or may be routed along another side region of the lower rail (so that the entirety of the flexible drive element is disposed along the rail).

These and other objects, advantages, purposes and features of the present invention will become apparent upon review of the following specification in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a rear perspective view of a pickup truck having a rear slider window assembly in accordance with the present invention;

FIG. 2 is a rear elevation of the exterior of the window assembly, which has a helical cable drive system;

FIG. 3 is a bottom plan view of the window assembly of FIG. 2;

FIG. 4 is a side elevation of the window assembly of FIG. 2;

FIG. 5 is a front elevation of the interior of the window assembly of FIG. 2;

FIGS. 6 and 7 are views of the actuator and flexible helical cable of the drive system;

FIG. 8 is a sectional view taken along the line A-A in FIG. 5;

FIG. 9 is a sectional view taken along the line B-B in FIG. 5;

FIGS. 10 and 11 are additional views of the actuator and flexible helical cable of the drive system;

FIG. 12 is a perspective view of the drive system;

FIG. 13 is a rear elevation of the exterior of the window assembly, shown with a coilable cable drive system;

FIG. 14 is a side elevation of the window assembly of FIG. 13;

FIG. 15 is a front elevation of the interior of the window assembly of FIG. 13;

FIG. 16 is a bottom elevation of the window assembly of FIG. 13;

FIG. 17 is another side elevation of the window assembly of FIG. 13;

FIGS. 18 and 19 are views of the actuator and flexible reel cable of the drive system;

FIG. 20 is a sectional view taken along the line A-A in FIG. 15;

FIG. 21 is a sectional view taken along the line B-B in FIG. 15;

FIGS. 22 and 23 are additional views of the actuator and flexible cable of the drive system;

FIG. 24 is a perspective view of the drive system;

FIG. 25 is a rear elevation of the exterior of the window assembly, shown with a flexible tape drive system;

FIG. 26 is a front elevation of the interior of the window assembly of FIG. 25;

FIG. 27 is a bottom elevation of the window assembly of FIG. 25;

FIG. 28 is another side elevation of the window assembly of FIG. 25;

FIGS. 29 and 30 are views of the actuator and flexible tape of the drive system;

FIG. 31 is a sectional view taken along the line A-A in FIG. 26;

FIGS. 32 and 33 are additional views of the actuator and flexible tape of the drive system;

FIG. 34 is a perspective view of the drive system;

FIG. 35 is a rear elevation of the exterior of the window assembly, shown with a flexible notched tape drive system;

FIG. 36 is a bottom elevation of the window assembly of FIG. 35;

FIG. 37 is a side elevation of the window assembly of FIG. 35;

FIG. 38 is a front elevation of the interior of the window assembly of FIG. 35;

FIG. 39 is a bottom elevation of the window assembly of FIG. 38;

FIG. 40 is another side elevation of the window assembly of FIG. 35;

FIG. 41 is a sectional view taken along the line A-A in FIG. 38;

FIG. 42 is a sectional view taken along the line C-C in FIG. 38;

FIG. 43 is a sectional view taken along the line B-B in FIG. 35;

FIGS. 44-47 are views of the actuator and flexible notched tape of the drive system;

FIG. 48 is a perspective view of the drive system;

FIG. 49 is a rear elevation of the exterior of the window assembly, shown with a telescoping cable drive system;

FIG. 50 is a front elevation of the interior of the window assembly of FIG. 49;

FIG. 51 is a bottom elevation of the window assembly of FIG. 50;

FIG. 52 is another side elevation of the window assembly of FIG. 50;

FIGS. 53 and 54 are views of the actuator and telescoping cable of the drive system;

FIG. 55 is a sectional view taken along the line A-A in FIG. 50;

FIGS. 56 and 57 are additional views of the actuator and telescoping cable of the drive system; and

FIG. 58 is a perspective view of the drive system.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings and the illustrative embodiments depicted therein, a rear slider window assembly 10 of a vehicle 12 (such as a pickup truck or the like) includes a window frame 14, a fixed window panel 15 having an aperture that separates side window portions 16, 18 and a movable window panel 20 that is movable relative to frame 14 and fixed window panel between an opened position and a closed position (FIGS. 1-3). The movable window panel 20 is movable along the frame 14 (such as along upper and lower rails or channels of the frame) relative to the fixed window panel(s) via a drive system that pulls and/or pushes the movable panel in either direction to open and close the rear window, such as responsive to a user input or switch in the vehicle cabin.

The drive system comprises a single flexible drive element, such as a flexible cable or tape or extending/retracting element that is disposed along the channel only on one side of the opening. In other words, the drive system does not have two cables that function to pull at the movable window panel in either direction to open or close the window. Instead, the drive system pulls the movable window in one direction and pushes it in the other direction to open and close the window. The window assembly and drive system include guide structure that limits or precludes flexing or bending of the flexible drive element as it moves along the lower rail of the window, particularly when pushing the movable window panel along the lower rail. The drive system comprises a drive motor 24 of a flexible helical cable drive system 26 (FIGS. 2-12) or a flexible cable drive system 28 (FIGS. 13-24) or a flexible tape drive system 30 (FIGS. 25-34) or a flexible notched tape drive system 32 (FIGS. 35-48) or a telescoping cable drive system 34 (FIGS. 49-58), as discussed below. The drive systems and window panels and channels/frames may be similar construction across several or all of the window assemblies, such that detailed discussions of common or similar aspects may not be repeated throughout the disclosure.

The drive system is mounted at the end of the lower channel or frame or rail 14 a, which comprises a plastic U-shaped channel portion 14 b (adhered to the interior surface of the fixed window panel) and an aluminum extruded channel 14 c, along which the movable window panel 20 and its carrier 20 a slidably move when opened and closed. The end of the lower rail 14 a at which the drive system is attached or mounted includes an end cap 14 d, which may be formed to accommodate or guide or support the cable or tape or tube of the drive system, as discussed below.

Optionally, and desirably, the drive motor or actuator or housing of the drive system may be pivotally mounted at the lower corner of the fixed window panel, so that the drive motor and cable or tape may be flipped onto the interior surface of the window for packaging and transport of the window assembly. When the window assembly is to be installed in the vehicle, the motor is flipped down and affixed relative to the window (via attachment at a window mounting bracket and/or at a vehicle mounting bracket) in its use position (shown in the drawings). Such a pivotable attachment reduces the size of the window assembly during transport.

Referring to FIGS. 2-12, the drive motor 24 of drive system 26 rotatably drives a gear that engages the flexible drive element or helical cable 26 a to move the cable in either direction along the lower rail or channel 14 a to move the movable window panel 20 relative to the frame 14 and fixed panel 15. As shown in FIGS. 6 and 7, the helical cable 26 a is routed from the drive motor 24 through a rigid cable tubing 26 b and into a receiving portion 26 c of the end cap attachment 14 d. The end of the cable 26 a attaches at a carrier attachment 26 d of the carrier 20 a of the movable window panel.

The cable 26 a is routed along an extruded channel or passageway 26 e of the rail 14 a such that the cable 26 a does not bend or flex along the rail 14 a when the drive system is moving the movable window panel away from the drive motor to close the window. Thus, during operation of the drive system 26, the drive motor 24 rotates the gear that engages the cable 26 a to move the cable in either direction through the rigid tubing 26 b and rail or channel 14 a, which moves the carrier and movable window panel 20 along the frame 14.

Referring now to FIGS. 13-24, the drive motor 24 of the drive system 28 rotatably drives a reel that coils and uncoils a flexible cable 28 a. As shown in FIG. 19, the cable 28 a includes notches along a side thereof for engaging teeth of the motor drive or reel 28 b to impart winding or unwinding of the cable 28 a from the reel. As shown in FIG. 23, the cable is routed through a guide tube 28 c that connects between the reel and motor and the end of the rail or channel 14 a. The cable is further routed into a passageway of the end cap of the rail (FIG. 23) and along a passageway 28 d formed with the rail 14 a (such as extruded with the aluminum rail or channel, as can be seen in FIG. 21), with the passageway along the rail receiving the cable therein and having side walls or structure that limits or precludes any flexing of the cable so that the cable can function to push the movable panel along the frame and fixed window panel.

At the end of the cable is a connector or pin or element that is configured to connect the cable to the carrier of the movable window panel. In the illustrated embodiment, the cable is connected to the connector/end of the carrier via a pin 28 e (FIG. 15) that extends upward from the end of the cable and through a slot 28 f along the top of the passageway (see FIG. 21). When the cable is wound and unwound at the reel 28 b by the drive motor, the pin moves with the cable end and moves along the slot formed along the top of the passageway. The rail and extruded cable enclosure thus function to guide the cable and to limit or preclude flexing of the cable, which is flexible but sufficiently strong so as to be able to push the carrier and movable panel when the cable is unwound from the reel.

Referring now to FIGS. 25-34, the drive motor 24 of the drive system 30 rotatably drives a reel that coils and uncoils a flexible tape or strip 30 a (such as a flattened metallic strip that is flexible in one direction and not as flexible in another direction orthogonal to the one direction) via rotation of a reel 30 b (FIG. 29). As shown in FIGS. 32 and 33, the reel 30 b has a toothed outer circumferential surface for engaging a drive gear of the motor, such that rotation of the drive gear rotates the reel about an axis normal to the axis of rotation of the drive gear.

As shown in FIG. 31, the tape 30 a comprises a generally U-shaped tape that allows for limited flexing of the tape. The tape 30 a is received and moves along a correspondingly formed or similarly formed passageway 30 c of the rail or channel 14 a, where the passageway 30 c limits flexing of the tape so that the tape is capable of pushing the carrier and movable panel along the frame and fixed window panel when the drive motor is actuated to uncoil the flexible tape from the reel. As can be seen with reference to FIGS. 32 and 33, the tape 30 a is received through a passageway or guide portion 30 d of the channel 14 b (FIG. 32) and then is received in the passageway 30 c of the extruded channel 14 c (FIG. 33). The end of the tape 30 a may connect to the carrier of the movable window panel via any suitable connection, such as a pin or connector that extends upward through a slot at the upper region of the passageway 30 c (such as in a similar manner as the pin 28 e moves along the slot 28 f for drive system 28).

Referring now to FIGS. 35-48, the drive motor 24 of the drive system 32 rotatably drives a drive gear 32 b that rotates a toothed wheel or gear 32 c that engages and moves a flexible notched tape 32 a. As shown in FIGS. 43 and 44, the toothed wheel or gear 32 c is disposed within the lower rail and is rotatable about a vertical axis and engages notches of the flexible notched tape 32 a, such that rotation of the drive gear and toothed wheel moves the tape 32 a around the toothed wheel in either direction. The motor 24 may rotatably drive the drive gear 32 b via an output drive gear that rotates about a horizontal axis, such as can be seen with reference to FIGS. 46 and 47. The drive gearbox and gear 32 b and toothed wheel 32 c and the notched tape are disposed within the rail or within the profile of the rail and thus may be packaged within the rail for a reduced profile drive system.

The notched tape 32 a is routed along channels 32 d, 32 e along opposite sides of the rail or channel 14 a (FIG. 42). In the illustrated embodiment, the channel 32 d is formed or extruded along the aluminum rail 14 c that is received in the molded lower rail or channel 14 b, while the channel 32 e is formed along the surface of the lower rail or channel 14 b that faces toward and is bonded to the interior surface of the fixed window panel 15. One end of the notched tape 32 a (such as the end of the portion of the tape that is in channel 32 d) is connected to or attached to the carrier 32 f of the movable window panel (such as via a pin or tooth or pins or teeth being received in notches at the end of the tape), such that movement of the tape (via rotation of the toothed wheel 32 c) moves the end of the tape and the movable window panel along the frame and fixed window panel. The other end or portion of the tape (see FIGS. 46 and 47) is disposed in and moves along the channel 32 e of the lower rail or channel 14 b, which functions to guide and support the tape during operation of the drive system 32.

The channels 32 d, 32 e function to allow for movement of the tape in either direction but limit or preclude flexing of the tape so that the tape can function to push the carrier and movable window panel along the frame. For example, when the toothed wheel is rotated in the counter-clockwise direction in FIG. 43, the end of the tape attached to the carrier moves along the channel 32 d and pulls at the carrier and movable window to open the window, with the other end of the tape moving along channel 32 e away from the toothed wheel. When the toothed wheel is rotated in the clockwise direction in FIG. 43, the end of the tape attached to the carrier moves along the channel 32 d and pushes at the carrier and movable window to close the window, with the other end of the tape moving along the channel 32 e toward the toothed wheel.

Referring now to FIGS. 49-58, the drive motor 24 of drive system 34 winds and unwinds a flexible cable 34 a about a spool or reel 34 b. The cable 34 a is received in or disposed in a telescoping support tube or enclosure or construction 34 c that telescopingly extends when the cable is uncoiled or unwound and telescopingly retracts when the cable is coiled or wound. The cable is a flexible cable to allow for coiling at the reel or spool, yet is sufficiently resistant to flexing (when restrained by the tube) as it is extended and pushes the innermost section of the telescoping support tube outward. In the illustrated embodiment, the telescoping tube support 34 c comprises three sections (a base section that receives a middle or intermediate section that receives an innermost section).

The telescoping support tube 34 c is disposed along the channel or rail 14 a and, when extended, the end of the innermost section of the support tube reaches to around the mid-point of the window assembly (see FIGS. 50 and 51). By connecting the cable or end of the innermost section of the telescoping tube 34 c to the middle region of the carrier of the movable window panel, the movable window panel can be fully opened, whereby the middle of the movable window panel and the end of the innermost tube section approaches and is at or near the end of the base section of the tube. Optionally, if the tube were to connect at the end or side of the movable window panel, the base section may be smaller in length (and the tube may comprise four or five sections) to provide clearance at the base end between the carrier and end of the rail for the telescoping tube (when it is retracted).

As shown in FIG. 55, the telescoping tube is received in or at an end cap attachment 34 d, which guides and supports at least the base of the tube along the rail or channel 14 a. The base portion of the tube may be further supported via formed (extruded or molded) receiving portions along the rail or channel, and additional supports may be formed along the rail or channel to guide and/or support the extended portions of the telescoping tube when the tube is at least partially extended.

Thus, the drive systems of the present invention provide for opening and closing the rear slider window assembly via a single flexible drive element or cable or tape or strip or the like that pulls the movable window panel in one direction (such as to open the window) and pushes the movable window panel in the other direction (such as to close the window). The drive systems include guides or structure that guide and support the flexible cable/tape to limit flexing or bending of the flexible cable/tape along the lower rail, particularly when the drive system is extending or uncoiling the flexible cable/tape to push the movable window panel along the frame.

The drive motor assembly and rail configurations may utilize aspects of the drive assemblies of the types described in U.S. Pat. Nos. 4,920,698; 4,995,195; 5,146,712; 5,531,046; 5,572,376; 6,955,009; 7,073,293; 8,151,519 and/or 8,938,914, and/or U.S. Publication Nos. US-2017-0356231; US-2004-0020131 and/or US-2008-0127563, which are all hereby incorporated herein by reference in their entireties.

In the illustrated embodiments, the window assembly comprises a hole-in-glass window configuration, where a single fixed glass panel has an aperture or hole or opening established therethrough to define separate spaced apart fixed window panels or panel portions, such as in a similar manner as the window assemblies described in U.S. Pat. No. 8,881,458, which is hereby incorporated herein by reference in its entirety. Optionally, the window assembly may include two fixed window panels that are spaced apart so as to define an opening therebetween. The fixed window panels may comprise two separate spaced apart fixed window panels that define the opening therebetween (and with upper and lower appliqués or trim or filler panels or elements disposed at the upper and lower regions of the opening and between the fixed window panels, and thus with the lighting device disposed behind the upper appliqué or the like).

The benefits of embodiments of the present invention may also be realized in sliding window constructions where an aperture is created in a fixed window panel and where a movable window panel can be made to open or close the aperture. Slider windows of this type are disclosed such as in U.S. Pat. Nos. 8,915,018 and/or 8,881,458, and/or U.S. Publication No. US-2003-0213179 and/or RE41502, which are hereby incorporated herein by reference in their entireties. The benefits of embodiments of the present invention may also be realized in vehicular movable window assemblies other than a rear slider window assembly for a pickup truck or the like, such as (for example) a slider window assembly suitable for use as a movable side window for a vehicle such as a van or a bus.

Optionally, the window assembly or assemblies of the present invention may utilize aspects of the window assemblies described in U.S. Pat. Nos. 8,915,018; 8,881,458; 8,402,695; 7,073,293; 7,003,916; 6,119,401; 6,026,611; 5,996,284; 5,799,444 and/or 6,691,464, and/or U.S. Publication Nos. US-2006-0107600; US-2008-0127563; US-2004-0020131 and/or US-2003-0213179, and/or International Publication No. WO 2012/148968, all of which are hereby incorporated herein by reference in their entireties.

Changes and modifications to the specifically described embodiments may be carried out without departing from the principles of the present invention, which is intended to be limited only by the scope of the appended claims, as interpreted according to the principles of patent law. 

1. A vehicular slider window assembly, said vehicular slider window assembly comprising: a frame portion having an upper rail and a lower rail; a fixed window panel that is fixed relative to said frame portion, said fixed window panel at least in part defining an opening; a movable window panel that is movable along said upper rail and said lower rail, wherein said movable window panel is movable between a closed position, where said movable window panel is disposed at said opening, and an opened position, where said movable window panel is disposed at least partially along said fixed window panel; a drive system operable to move said movable window panel between the opened position and the closed position, wherein said drive system comprises a single flexible drive element that, when said drive system is actuated to move said movable window panel in one direction, said flexible drive element pulls said movable window panel along said lower rail, and when said drive system is actuated to move said movable window panel in the opposite direction, said flexible drive element pushes said movable window panel along said lower rail; and wherein said lower rail of said frame portion comprises guide structure that receives said flexible drive element and that limits flexing or bending of said flexible drive element when said flexible drive element pushes said movable window panel along said lower rail.
 2. The vehicular slider window assembly of claim 1, wherein said flexible drive element, when said drive system is actuated to move said movable window panel toward the opened position, pulls said movable window panel along said lower rail, and wherein said flexible drive element, when said drive system is actuated to move said movable window panel toward the closed position, pushes said movable window panel along said lower rail.
 3. The vehicular slider window assembly of claim 1, wherein said flexible drive element comprises a helical cable, and wherein said drive system comprises a toothed drive gear that engages said helical cable, and wherein rotational driving of said toothed drive gear causes movement of said helical cable to move said movable window panel along said lower rail.
 4. The vehicular slider window assembly of claim 3, wherein said drive system comprises a guide element disposed along said lower rail to guide said helical cable along said lower rail.
 5. The vehicular slider window assembly of claim 1, wherein said flexible drive element comprises a flexible cable and wherein said guide structure defines a passageway along said lower rail, and wherein said flexible cable is received in the passageway along said lower rail, and wherein said guide structure limits flexing or bending of said flexible cable as said flexible cable is moved along said passageway.
 6. The vehicular slider window assembly of claim 5, wherein said flexible cable is, when moved to pull said movable window panel, coiled around a spool, and wherein said flexible cable is, when moved to push said movable window panel, uncoiled from said spool.
 7. The vehicular slider window assembly of claim 6, wherein said flexible cable comprises a cylindrical cable and wherein said passageway comprises a cylindrical passageway.
 8. The vehicular slider window assembly of claim 7, wherein said cylindrical passageway is formed partially along a lower region of said lower rail, and wherein said guide structure that defines said passageway includes a slot along an upper region thereof, and wherein connection between said flexible cable and said movable window panel is made via an element that passes through and is movable along said slot.
 9. The vehicular slider window assembly of claim 6, wherein said flexible cable comprises a thin U-shaped cable, and wherein said guide structure defines a correspondingly formed passageway that limits flexing or bending of said thin U-shaped cable.
 10. The vehicular slider window assembly of claim 1, wherein said flexible drive element comprises a flexible tape that is received in a first passageway defined by said guide structure along said lower rail, and wherein said guide structure of said first passageway limits flexing or bending of said flexible tape as it is moved along said first passageway.
 11. The vehicular slider window assembly of claim 10, wherein one end region of said flexible tape is attached at said movable window panel, and wherein an opposite end region of said flexible tape is disposed in and is movable along a second passageway of said lower rail, and wherein a toothed wheel is disposed at an end region of said lower rail and engages notches at said flexible tape, and wherein said toothed wheel rotates about a vertical axis of rotation to move said flexible tape along both of said first and second passageways.
 12. The vehicular slider window assembly of claim 11, wherein, when said toothed wheel is rotated in a first direction, the end region of said flexible tape that is attached at said movable window panel moves in a first direction along said first passageway and the opposite end region of said flexible tape moves in a second direction along said second passageway.
 13. The vehicular slider window assembly of claim 12, wherein said flexible tape is oriented in a vertical plane, and wherein said first and second passageways comprise vertically oriented passageways with vertical structure that limits flexing of said flexible tape at least in a horizontal direction.
 14. The vehicular slider window assembly of claim 12, wherein said lower rail comprises a slot along said first passageway, and wherein connection between the end region of said flexible tape and said movable window panel is made via an element that passes through and is movable along said slot.
 15. The vehicular slider window assembly of claim 1, wherein said flexible drive element comprises a flexible cable that is received in a telescoping support tube at said lower rail.
 16. The vehicular slider window assembly of claim 15, wherein said flexible cable is, when moved to pull said movable window panel, coiled around a spool to retract said telescoping support tube, and wherein said flexible cable is, when moved to push said movable window panel, uncoiled from said spool so as to extend said telescoping support tube partially along said lower rail.
 17. The vehicular slider window assembly of claim 1, wherein said drive system comprises a drive motor that rotates a drive element to move said single flexible drive element.
 18. The vehicular slider window assembly of claim 17, wherein said drive motor is disposed at an end region of said lower rail.
 19. The vehicular slider window assembly of claim 1, wherein said fixed window panel comprises a single fixed window panel having an opening therethrough.
 20. A vehicular slider window assembly, said vehicular slider window assembly comprising: a frame portion having an upper rail and a lower rail; a fixed window panel that is fixed relative to said frame portion, said fixed window panel at least in part defining an opening; a movable window panel that is movable along said upper rail and said lower rail, wherein said movable window panel is movable between a closed position, where said movable window panel is disposed at said opening, and an opened position, where said movable window panel is disposed at least partially along said fixed window panel; a drive system operable to move said movable window panel between the opened position and the closed position, wherein said drive system comprises a drive motor and a single flexible drive element; wherein said drive motor is disposed at an end region of said lower rail and is operable to move said flexible drive element to move said movable window panel between the opened position and the closed position; wherein, when said drive system is actuated to move said movable window panel in one direction, said flexible drive element pulls said movable window panel along said lower rail toward said drive motor, and when said drive system is actuated to move said movable window panel in the opposite direction, said flexible drive element pushes said movable window panel along said lower rail away from said drive motor; and wherein said lower rail of said frame portion comprises guide structure that defines a passageway at least partially along said lower rail, and wherein said flexible drive element is received in said passageway such that said guide structure limits flexing or bending of said flexible drive element when said flexible drive element pushes said movable window panel along said lower rail.
 21. The vehicular slider window assembly of claim 20, wherein said flexible drive element, when said drive system is actuated to move said movable window panel toward the opened position, pulls said movable window panel along said lower rail, and wherein said flexible drive element, when said drive system is actuated to move said movable window panel toward the closed position, pushes said movable window panel along said lower rail.
 22. The vehicular slider window assembly of claim 20, wherein said drive motor rotatably drives a spool, and wherein, when said drive motor rotatably drives said spool in a first direction, said flexible drive element is coiled around said spool to pull said movable window panel, and wherein, when said drive motor rotatably drives said spool in a second direction opposite the first direction, said flexible drive element is uncoiled from said spool to push said movable window panel.
 23. The vehicular slider window assembly of claim 22, wherein said guide structure that defines said passageway includes a slot at least partially therealong, and wherein connection between said flexible drive element and said movable window panel is made via an element that passes through and is movable along said slot via movement of said flexible drive element.
 24. The vehicular slider window assembly of claim 23, wherein said flexible drive element comprises a cylindrical cable, and wherein said passageway comprises a cylindrical passageway.
 25. The vehicular slider window assembly of claim 23, wherein said flexible drive element comprises a thin U-shaped cable, and wherein said guide structure defines a correspondingly formed passageway that limits flexing or bending of said thin U-shaped cable.
 26. The vehicular slider window assembly of claim 22, wherein said flexible drive element is received in a telescoping support tube at said lower rail, and wherein, when said drive motor rotatably drives the spool in the first direction to coil said flexible drive element around the spool, said flexible drive element retracts said telescoping support tube to pull said movable window panel, and wherein, when said drive motor rotatably drives the spool in the second direction to uncoil said flexible drive element from the spool, said flexible drive element extends said telescoping support tube partially along said lower rail to push said movable window panel.
 27. The vehicular slider window assembly of claim 20, wherein said flexible drive element comprises a flexible tape that is received in a first passageway defined by said guide structure along said lower rail, and wherein said guide structure of said first passageway limits flexing or bending of said flexible tape as it is moved along said first passageway, and wherein one end region of said flexible tape is attached at said movable window panel, and wherein an opposite end region of said flexible tape is disposed in and is movable along a second passageway of said lower rail, and wherein a toothed wheel that is rotatably driven by said drive motor engages notches at said flexible tape, and wherein said toothed wheel rotates to move said flexible tape along both of said first and second passageways, and wherein, when said toothed wheel is rotated in a first direction, the end region of said flexible tape that is attached at said movable window panel moves in a first direction along said first passageway and the opposite end region of said flexible tape moves in a second direction along said second passageway.
 28. The vehicular slider window assembly of claim 27, wherein said lower rail comprises a slot along said first passageway, and wherein connection between the end region of said flexible tape and said movable window panel is made via an element that passes through and is movable along said slot.
 29. The vehicular slider window assembly of claim 20, wherein said fixed window panel comprises a single fixed window panel having an opening therethrough. 